Specialty headsets for use with Northern Telecom's NORSTAR 512 and MERIDIAN M2216. These units come with a spare voice tube. NC = Noise Canceling When ordering each headset, click on the Order Link and follow the instructions for Miscellaneous Item. Mirage Polaris Availability: Usually ships the same business day. P41-U10P Supra Polaris Availability: Usually ships the same business day. P51-U10P Supra Polaris - NC Availability: Usually ships the same business day. P51N-U10P Supra Binaural Polaris Availability: Usually ships the same business day. P61-U10P Supra Binaural Polaris - NC Availability: Usually ships the same business day. P61N-U10P TriStar Polaris Availability: Usually ships the same business day. P81-U10P TriStar Polaris - NC Availability: Usually ships the same business day. P81N-U10P Encore Polaris Availability: Usually ships the same business day. P91-U10P Encore Polaris - NC Availability: Usually ships the same business day. P91N-U10P Encore Binaural Polaris Availability: Usually ships the same business day. P101-U10P Encore Binaural Polaris - NC Availability: Usually ships the same business day. P101N-U10P Choose a link from this drop down box Amplifiers -M12 Vista Telephone Headset Amplifier -CA10 Cordless Telephone -MX10 Headset Switcher Adapter -A20 Telephone Headset Amplifier -P10 Plug Prong Adapter -S10 Telephone Headset System -T10 Headset Telephone -T20 Headset Telephone Headsets-Home & Office -Mirage H41 H41N -Supra H51 H51N H61 H61N -TriStar H81 H81N -Encore H91 H91N H101 H101N -H131N Freehand -DuoSet H141 H141N Cordless Phones Mobile Adapters Mobile Headsets M114 M124 M145 Computer Headsets Analog Computer Headsets Digital Accessories - Parts Low Priced Specials Refurbished Product 2 Year Warranty All product shipped within 24 hours ($50.00 minmum) - FREE OF CHARGE The Headset Guy PO Box 131791 Carlsbad, CA 92013 Phone: (888) 793-8976 This Web site is run by a distributor of Plantronics® products and is not otherwise affiliated with Plantronics®, Inc.